# Copyright 2016 Red Hat Inc & Xena Networks. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Contributors: # Rick Alongi, Red Hat Inc. # Amit Supugade, Red Hat Inc. # Dan Amzulescu, Xena Networks # Christian Trautman, Red Hat Inc. """ Xena Traffic Generator Model """ # python imports import binascii import logging import os import subprocess import sys import xml.etree.ElementTree as ET from collections import OrderedDict from time import sleep import scapy.layers.inet as inet from conf import merge_spec from conf import settings from core.results.results_constants import ResultsConstants from tools.pkt_gen.trafficgen.trafficgen import ITrafficGenerator from tools.pkt_gen.xena.XenaDriver import ( aggregate_stats, line_percentage, XenaSocketDriver, XenaManager, ) from tools.pkt_gen.xena.json.xena_json_mesh import XenaJSONMesh from tools.pkt_gen.xena.json.xena_json_blocks import XenaJSONBlocks from tools.pkt_gen.xena.json.xena_json_pairs import XenaJSONPairs _CURR_DIR = os.path.dirname(os.path.realpath(__file__)) class Xena(ITrafficGenerator): """ Xena Traffic generator wrapper class """ _logger = logging.getLogger(__name__) def __init__(self): super().__init__() self.mono_pipe = None self.xmanager = None self._params = {} self._xsocket = None self._duration = None self.tx_stats = None self.rx_stats = None self._log_handle = None user_home = os.path.expanduser('~') self._log_path = '{}/Xena/Xena2544-2G/Logs/xena2544.log'.format( user_home) # make the folder and log file if they doesn't exist if not os.path.exists(self._log_path): os.makedirs(os.path.dirname(self._log_path)) # empty the file contents open(self._log_path, 'w').close() @staticmethod def _create_throughput_result(root): """ Create the results based off the output xml file from the Xena2544.exe execution :param root: root dictionary from xml import :return: Results Ordered dictionary based off ResultsConstants """ # get the test type from the report file test_type = root[0][1].get('TestType') # set the version from the report file settings.setValue('XENA_VERSION', root[0][0][1].get('GeneratedBy')) if test_type == 'Throughput': results = OrderedDict() results[ResultsConstants.THROUGHPUT_RX_FPS] = float( root[0][1][0][0].get('PortRxPps')) + float( root[0][1][0][1].get('PortRxPps')) results[ResultsConstants.THROUGHPUT_RX_MBPS] = (float( root[0][1][0][0].get('PortRxBpsL1')) + float( root[0][1][0][1].get('PortRxBpsL1')))/ 1000000 results[ResultsConstants.THROUGHPUT_RX_PERCENT] = ( 100 - float(root[0][1][0].get('TotalLossRatioPcnt'))) * float( root[0][1][0].get('TotalTxRatePcnt'))/100 results[ResultsConstants.TX_RATE_FPS] = root[0][1][0].get( 'TotalTxRateFps') results[ResultsConstants.TX_RATE_MBPS] = float( root[0][1][0].get('TotalTxRateBpsL1')) / 1000000 results[ResultsConstants.TX_RATE_PERCENT] = root[0][1][0].get( 'TotalTxRatePcnt') try: results[ResultsConstants.MIN_LATENCY_NS] = float( root[0][1][0][0].get('MinLatency')) * 1000 except ValueError: # Stats for latency returned as N/A so just post them results[ResultsConstants.MIN_LATENCY_NS] = root[0][1][0][0].get( 'MinLatency') try: results[ResultsConstants.MAX_LATENCY_NS] = float( root[0][1][0][0].get('MaxLatency')) * 1000 except ValueError: # Stats for latency returned as N/A so just post them results[ResultsConstants.MAX_LATENCY_NS] = root[0][1][0][0].get( 'MaxLatency') try: results[ResultsConstants.AVG_LATENCY_NS] = float( root[0][1][0][0].get('AvgLatency')) * 1000 except ValueError: # Stats for latency returned as N/A so just post them results[ResultsConstants.AVG_LATENCY_NS] = root[0][1][0][0].get( 'AvgLatency') elif test_type == 'Back2Back': results = OrderedDict() # Just mimic what Ixia does and only return the b2b frame count. # This may change later once its decided the common results stats # to be returned should be. results[ResultsConstants.B2B_FRAMES] = root[0][1][0][0].get( 'TotalTxBurstFrames') else: raise NotImplementedError('Unknown test type in report file.') return results def _build_packet_header(self, reverse=False): """ Build a packet header based on traffic profile using scapy external libraries. :param reverse: Swap source and destination info when building header :return: packet header in hex """ srcmac = self._params['traffic']['l2'][ 'srcmac'] if not reverse else self._params['traffic']['l2'][ 'dstmac'] dstmac = self._params['traffic']['l2'][ 'dstmac'] if not reverse else self._params['traffic']['l2'][ 'srcmac'] srcip = self._params['traffic']['l3'][ 'srcip'] if not reverse else self._params['traffic']['l3']['dstip'] dstip = self._params['traffic']['l3'][ 'dstip'] if not reverse else self._params['traffic']['l3']['srcip'] layer2 = inet.Ether(src=srcmac, dst=dstmac) layer3 = inet.IP(src=srcip, dst=dstip, proto=self._params['traffic']['l3']['proto']) layer4 = inet.UDP(sport=self._params['traffic']['l4']['srcport'], dport=self._params['traffic']['l4']['dstport']) if self._params['traffic']['vlan']['enabled']: vlan = inet.Dot1Q(vlan=self._params['traffic']['vlan']['id'], prio=self._params['traffic']['vlan']['priority'], id=self._params['traffic']['vlan']['cfi']) else: vlan = None packet = layer2/vlan/layer3/layer4 if vlan else layer2/layer3/layer4 packet_bytes = bytes(packet) packet_hex = '0x' + binascii.hexlify(packet_bytes).decode('utf-8') return packet_hex def _create_api_result(self): """ Create result dictionary per trafficgen specifications from socket API stats. If stats are not available return values of 0. :return: ResultsConstants as dictionary """ # Handle each case of statistics based on if the data is available. # This prevents uncaught exceptions when the stats aren't available. result_dict = OrderedDict() if self.tx_stats.data.get(self.tx_stats.pt_stream_keys[0]): result_dict[ResultsConstants.TX_FRAMES] = self.tx_stats.data[ self.tx_stats.pt_stream_keys[0]]['packets'] result_dict[ResultsConstants.TX_RATE_FPS] = self.tx_stats.data[ self.tx_stats.pt_stream_keys[0]]['packets'] / self._duration result_dict[ResultsConstants.TX_RATE_MBPS] = (( self.tx_stats.data[self.tx_stats.pt_stream_keys[0]]['bytes'] * 8) / 1000000) / self._duration result_dict[ResultsConstants.TX_BYTES] = self.tx_stats.data[ self.tx_stats.pt_stream_keys[0]]['bytes'] # tx rate percent may need to be halved if bi directional result_dict[ResultsConstants.TX_RATE_PERCENT] = line_percentage( self.xmanager.ports[0], self.tx_stats, self._duration, self._params['traffic']['l2']['framesize']) if \ self._params['traffic']['bidir'] == 'False' else\ line_percentage( self.xmanager.ports[0], self.tx_stats, self._duration, self._params['traffic']['l2']['framesize']) / 2 else: self._logger.error('Transmit stats not available.') result_dict[ResultsConstants.TX_FRAMES] = 0 result_dict[ResultsConstants.TX_RATE_FPS] = 0 result_dict[ResultsConstants.TX_RATE_MBPS] = 0 result_dict[ResultsConstants.TX_BYTES] = 0 result_dict[ResultsConstants.TX_RATE_PERCENT] = 0 if self.rx_stats.data.get('pr_tpldstraffic'): result_dict[ResultsConstants.RX_FRAMES] = self.rx_stats.data[ 'pr_tpldstraffic']['0']['packets'] result_dict[ ResultsConstants.THROUGHPUT_RX_FPS] = self.rx_stats.data[ 'pr_tpldstraffic']['0']['packets'] / self._duration result_dict[ ResultsConstants.THROUGHPUT_RX_MBPS] = (( self.rx_stats.data['pr_tpldstraffic']['0']['bytes'] *8) / 1000000) / self._duration result_dict[ResultsConstants.RX_BYTES] = self.rx_stats.data[ 'pr_tpldstraffic']['0']['bytes'] # throughput percent may need to be halved if bi directional result_dict[ ResultsConstants.THROUGHPUT_RX_PERCENT] = line_percentage( self.xmanager.ports[1], self.rx_stats, self._duration, self._params['traffic']['l2']['framesize']) if \ self._params['traffic']['bidir'] == 'False' else \ line_percentage( self.xmanager.ports[1], self.rx_stats, self._duration, self._params['traffic']['l2']['framesize']) / 2 else: self._logger.error('Receive stats not available.') result_dict[ResultsConstants.RX_FRAMES] = 0 result_dict[ResultsConstants.THROUGHPUT_RX_FPS] = 0 result_dict[ResultsConstants.THROUGHPUT_RX_MBPS] = 0 result_dict[ResultsConstants.RX_BYTES] = 0 result_dict[ResultsConstants.THROUGHPUT_RX_PERCENT] = 0 if self.rx_stats.data.get('pr_tplderrors'): result_dict[ResultsConstants.PAYLOAD_ERR] = self.rx_stats.data[ 'pr_tplderrors']['0']['pld'] result_dict[ResultsConstants.SEQ_ERR] = self.rx_stats.data[ 'pr_tplderrors']['0']['seq'] else: result_dict[ResultsConstants.PAYLOAD_ERR] = 0 result_dict[ResultsConstants.SEQ_ERR] = 0 if self.rx_stats.data.get('pr_tpldlatency'): result_dict[ResultsConstants.MIN_LATENCY_NS] = self.rx_stats.data[ 'pr_tpldlatency']['0']['min'] result_dict[ResultsConstants.MAX_LATENCY_NS] = self.rx_stats.data[ 'pr_tpldlatency']['0']['max'] result_dict[ResultsConstants.AVG_LATENCY_NS] = self.rx_stats.data[ 'pr_tpldlatency']['0']['avg'] else: result_dict[ResultsConstants.MIN_LATENCY_NS] = 0 result_dict[ResultsConstants.MAX_LATENCY_NS] = 0 result_dict[ResultsConstants.AVG_LATENCY_NS] = 0 return result_dict def _setup_json_config(self, tests, loss_rate, testtype=None, bonding_test=False): """ Create a 2bUsed json file that will be used for xena2544.exe execution. :param tests: Number of tests :param loss_rate: The acceptable loss rate as float :param testtype: Either '2544_b2b' or '2544_throughput' as string :param bonding_test: Specify if the test is a bonding test which will enable the pairs topology :return: None """ # set duplex mode, this code is valid, pylint complaining with a # warning that many have complained about online. # pylint: disable=redefined-variable-type try: if self._params['traffic']['bidir'] == "True": j_file = XenaJSONMesh() elif self._params['traffic']['bidir'] == "False": j_file = XenaJSONBlocks() elif bonding_test: j_file = XenaJSONPairs() j_file.set_chassis_info( settings.getValue('TRAFFICGEN_XENA_IP'), settings.getValue('TRAFFICGEN_XENA_PASSWORD') ) j_file.set_port(0, settings.getValue('TRAFFICGEN_XENA_MODULE1'), settings.getValue('TRAFFICGEN_XENA_PORT1')) j_file.set_port(1, settings.getValue('TRAFFICGEN_XENA_MODULE2'), settings.getValue('TRAFFICGEN_XENA_PORT2')) j_file.set_port_ip_v4( 0, settings.getValue("TRAFFICGEN_XENA_PORT0_IP"), settings.getValue("TRAFFICGEN_XENA_PORT0_CIDR"), settings.getValue("TRAFFICGEN_XENA_PORT0_GATEWAY")) j_file.set_port_ip_v4( 1, settings.getValue("TRAFFICGEN_XENA_PORT1_IP"), settings.getValue("TRAFFICGEN_XENA_PORT1_CIDR"), settings.getValue("TRAFFICGEN_XENA_PORT1_GATEWAY")) if testtype == '2544_throughput': j_file.set_test_options_tput( packet_sizes=self._params['traffic']['l2']['framesize'], iterations=tests, loss_rate=loss_rate, duration=self._duration, micro_tpld=True if self._params[ 'traffic']['l2']['framesize'] == 64 else False) j_file.enable_throughput_test() j_file.modify_2544_tput_options( settings.getValue('TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE'), settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE'), settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE'), settings.getValue( 'TRAFFICGEN_XENA_2544_TPUT_VALUE_RESOLUTION'), settings.getValue( 'TRAFFICGEN_XENA_2544_TPUT_USEPASS_THRESHHOLD'), settings.getValue( 'TRAFFICGEN_XENA_2544_TPUT_PASS_THRESHHOLD') ) elif testtype == '2544_b2b': j_file.set_test_options_back2back( packet_sizes=self._params['traffic']['l2']['framesize'], iterations=tests, duration=self._duration, startvalue=self._params['traffic']['frame_rate'], endvalue=self._params['traffic']['frame_rate'], micro_tpld=True if self._params[ 'traffic']['l2']['framesize'] == 64 else False) j_file.enable_back2back_test() j_file.set_header_layer2( dst_mac=self._params['traffic']['l2']['dstmac'], src_mac=self._params['traffic']['l2']['srcmac']) j_file.set_header_layer3( src_ip=self._params['traffic']['l3']['srcip'], dst_ip=self._params['traffic']['l3']['dstip'], protocol=self._params['traffic']['l3']['proto']) j_file.set_header_layer4_udp( source_port=self._params['traffic']['l4']['srcport'], destination_port=self._params['traffic']['l4']['dstport']) if self._params['traffic']['vlan']['enabled']: j_file.set_header_vlan( vlan_id=self._params['traffic']['vlan']['id'], id=self._params['traffic']['vlan']['cfi'], prio=self._params['traffic']['vlan']['priority']) j_file.add_header_segments( flows=self._params['traffic']['multistream'], multistream_layer=self._params['traffic']['stream_type']) j_file.write_config(os.path.join( _CURR_DIR, 'profiles/2bUsed.x2544')) except Exception as exc: self._logger.exception("Error during Xena JSON setup: %s", exc) raise def _start_traffic_api(self, packet_limit): """ Start the Xena traffic using the socket API driver :param packet_limit: packet limit for stream, set to -1 for no limit :return: None """ if not self.xmanager: self._xsocket = XenaSocketDriver( settings.getValue('TRAFFICGEN_XENA_IP')) self.xmanager = XenaManager( self._xsocket, settings.getValue('TRAFFICGEN_XENA_USER'), settings.getValue('TRAFFICGEN_XENA_PASSWORD')) # for the report file version info ask the chassis directly for its # software versions settings.setValue('XENA_VERSION', 'XENA Socket API - {}'.format( self.xmanager.get_version())) if not self.xmanager.ports: self.xmanager.ports[0] = self.xmanager.add_module_port( settings.getValue('TRAFFICGEN_XENA_MODULE1'), settings.getValue('TRAFFICGEN_XENA_PORT1')) if not self.xmanager.ports[0].reserve_port(): self._logger.error( 'Unable to reserve port 0. Please release Xena Port') if len(self.xmanager.ports) < 2: self.xmanager.ports[1] = self.xmanager.add_module_port( settings.getValue('TRAFFICGEN_XENA_MODULE2'), settings.getValue('TRAFFICGEN_XENA_PORT2')) if not self.xmanager.ports[1].reserve_port(): self._logger.error( 'Unable to reserve port 1. Please release Xena Port') # Clear port configuration for a clean start self.xmanager.ports[0].reset_port() self.xmanager.ports[1].reset_port() if settings.getValue('TRAFFICGEN_XENA_CONT_PORT_LEARNING_ENABLED'): # turn on port learning self.xmanager.ports[0].set_port_learning(1) self.xmanager.ports[1].set_port_learning(1) sleep(settings.getValue('TRAFFICGEN_XENA_CONT_PORT_LEARNING_DURATION')) # turn off port learning self.xmanager.ports[0].set_port_learning(0) self.xmanager.ports[1].set_port_learning(0) sleep(1) self.xmanager.ports[0].clear_stats() self.xmanager.ports[1].clear_stats() # set the port IP from the conf file self.xmanager.ports[0].set_port_ip( settings.getValue('TRAFFICGEN_XENA_PORT0_IP'), settings.getValue('TRAFFICGEN_XENA_PORT0_CIDR'), settings.getValue('TRAFFICGEN_XENA_PORT0_GATEWAY')) self.xmanager.ports[1].set_port_ip( settings.getValue('TRAFFICGEN_XENA_PORT1_IP'), settings.getValue('TRAFFICGEN_XENA_PORT1_CIDR'), settings.getValue('TRAFFICGEN_XENA_PORT1_GATEWAY')) self.xmanager.ports[0].set_port_time_limit(self._duration) self.xmanager.ports[1].set_port_time_limit(self._duration) def setup_stream(stream, port, payload_id, flip_addr=False): """ Helper function to configure streams. :param stream: Stream object from XenaDriver module :param port: Port object from XenaDriver module :param payload_id: payload ID as int :param flip_addr: Boolean if the source and destination addresses should be flipped. :return: None """ stream.set_on() if packet_limit != -1: stream.set_packet_limit(packet_limit) port.set_port_arp_reply(is_on=True) port.set_port_arp_reply(is_on=True, ipv6=True) port.set_port_ping_reply(is_on=True) port.set_port_ping_reply(is_on=True, ipv6=True) stream.set_rate_fraction(int( 10000 * self._params['traffic']['frame_rate'])) stream.set_packet_header(self._build_packet_header( reverse=flip_addr)) stream.set_header_protocol( 'ETHERNET VLAN IP UDP' if self._params['traffic']['vlan'][ 'enabled'] else 'ETHERNET IP UDP') stream.set_packet_length( 'fixed', self._params['traffic']['l2']['framesize'], self._params['traffic']['l2']['framesize']) stream.set_packet_payload('incrementing', '0x00') stream.set_payload_id(payload_id) port.set_port_time_limit(self._duration * 1000000) if self._params['traffic']['l2']['framesize'] == 64: # set micro tpld port.micro_tpld_enable() if self._params['traffic']['multistream']: stream.enable_multistream( flows=self._params['traffic']['multistream'], layer=self._params['traffic']['stream_type']) s1_p0 = self.xmanager.ports[0].add_stream() setup_stream(s1_p0, self.xmanager.ports[0], 0) if self._params['traffic']['bidir'] == 'True': s1_p1 = self.xmanager.ports[1].add_stream() setup_stream(s1_p1, self.xmanager.ports[1], 1, flip_addr=True) if not self.xmanager.ports[0].traffic_on(): self._logger.error( "Failure to start port 0. Check settings and retry.") if self._params['traffic']['bidir'] == 'True': if not self.xmanager.ports[1].traffic_on(): self._logger.error( "Failure to start port 1. Check settings and retry.") sleep(self._duration + 5) # the extra 5 seconds is to allow packets in flight to complete # getting results if self._params['traffic']['bidir'] == 'True': # need to aggregate out both ports stats and assign that data self.rx_stats = self.xmanager.ports[1].get_rx_stats() self.tx_stats = self.xmanager.ports[0].get_tx_stats() self.tx_stats.data = aggregate_stats( self.tx_stats.data, self.xmanager.ports[1].get_tx_stats().data) self.rx_stats.data = aggregate_stats( self.rx_stats.data, self.xmanager.ports[0].get_rx_stats().data) else: # no need to aggregate, just grab the appropriate port stats self.tx_stats = self.xmanager.ports[0].get_tx_stats() self.rx_stats = self.xmanager.ports[1].get_rx_stats() sleep(1) def _start_xena_2544(self): """ Start the xena2544 exe. :return: None """ args = ["mono", os.path.join(_CURR_DIR, "Xena2544.exe"), "-c", os.path.join(_CURR_DIR, "profiles/2bUsed.x2544"), "-e", "-r", _CURR_DIR, "-u", settings.getValue('TRAFFICGEN_XENA_USER')] # Sometimes Xena2544.exe completes, but mono holds the process without # releasing it, this can cause a deadlock of the main thread. Use the # xena log file as a way to detect this. self._log_handle = open(self._log_path, 'r') # read the contents of the log before we start so the next read in the # wait method are only looking at the text from this test instance self._log_handle.read() self.mono_pipe = subprocess.Popen(args, stdout=sys.stdout) def _wait_xena_2544_complete(self): """ Wait for Xena2544.exe completion. :return: None """ data = '' while True: try: self.mono_pipe.wait(60) self._log_handle.close() break except subprocess.TimeoutExpired: # check the log to see if Xena2544 has completed and mono is # deadlocked. data += self._log_handle.read() if 'TestCompletedSuccessfully' in data: self._log_handle.close() self.mono_pipe.terminate() break def _stop_api_traffic(self): """ Stop traffic through the socket API :return: Return results from _create_api_result method """ self.xmanager.ports[0].traffic_off() if self._params['traffic']['bidir'] == 'True': self.xmanager.ports[1].traffic_off() sleep(5) stat = self._create_api_result() self.disconnect() return stat def connect(self): self._logger.debug('Connect') return self def disconnect(self): """Disconnect from the traffic generator. As with :func:`connect`, this function is optional. Where implemented, this function should raise an exception on failure. :returns: None """ self._logger.debug('disconnect') if self.xmanager: self.xmanager.disconnect() self.xmanager = None if self._xsocket: self._xsocket.disconnect() self._xsocket = None def send_burst_traffic(self, traffic=None, numpkts=100, duration=20): """Send a burst of traffic. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._start_traffic_api(numpkts) return self._stop_api_traffic() def send_cont_traffic(self, traffic=None, duration=20): """Send a continuous flow of traffic. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._start_traffic_api(-1) return self._stop_api_traffic() def start_cont_traffic(self, traffic=None, duration=20): """Non-blocking version of 'send_cont_traffic'. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._start_traffic_api(-1) def stop_cont_traffic(self): """Stop continuous transmission and return results. """ return self._stop_api_traffic() def send_rfc2544_throughput(self, traffic=None, tests=1, duration=20, lossrate=0.0): """Send traffic per RFC2544 throughput test specifications. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._setup_json_config(tests, lossrate, '2544_throughput') self._start_xena_2544() self._wait_xena_2544_complete() root = ET.parse(os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() if settings.getValue('TRAFFICGEN_XENA_RFC2544_VERIFY'): # make sure we have a pass before even trying the verify. No need # to run verify on a failed iteration. root = ET.parse( os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() if root[0][1][0].get('TestState') == "FAIL": self._logger.info('Test failed, skipping verify') return Xena._create_throughput_result(root) # record the previous settings so we can revert to them if needed to # run the binary search again if the verify fails. old_tests = tests old_duration = self._duration old_min = settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE') # record the original values to restore after execution orig_min = settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE') orig_max = settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE') orig_init = settings.getValue('TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE') for attempt in range( 1, settings.getValue( 'TRAFFICGEN_XENA_RFC2544_MAXIMUM_VERIFY_ATTEMPTS')+1): self._logger.info('Running verify attempt %s', attempt) # get the last pass tx rate from the binary search pass_rate = float(root[0][1][0].get('TotalTxRatePcnt')) # run a one pass rfc2544 with the pass rate to see if it passes # the verify duration settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE', pass_rate) settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE', pass_rate) settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE', pass_rate) self.start_rfc2544_throughput( traffic, 1, settings.getValue( 'TRAFFICGEN_XENA_RFC2544_VERIFY_DURATION'), lossrate) self.wait_rfc2544_throughput() root = ET.parse( os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() # If it passed, report the number of lost frames and exit the # loop if root[0][1][0].get('TestState') == "PASS": self._logger.info('Verify passed, packets lost = %s', root[0][1][0].get('TotalLossFrames')) break elif attempt < settings.getValue( 'TRAFFICGEN_XENA_RFC2544_MAXIMUM_VERIFY_ATTEMPTS'): self._logger.info( 'Verify failed, resuming binary search, packets lost = %s', root[0][1][0].get('TotalLossFrames')) settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE', pass_rate - float(settings.getValue( 'TRAFFICGEN_XENA_2544_TPUT_VALUE_RESOLUTION'))) if settings.getValue( 'TRAFFICGEN_XENA_RFC2544_BINARY_RESTART_SMART_SEARCH'): settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE', (pass_rate - float(old_min)) / 2) else: settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE', pass_rate - float(settings.getValue( 'TRAFFICGEN_XENA_2544_TPUT_VALUE_RESOLUTION'))) settings.setValue( 'TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE', old_min) self._logger.debug( 'RFC2544 Initial rate: %s', settings.getValue('TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE')) self._logger.debug( 'RFC2544 Maximum rate: %s', settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE')) self._logger.debug( 'RFC2544 Minimum rate: %s', settings.getValue('TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE')) self._duration = old_duration self.start_rfc2544_throughput( traffic, old_tests, self._duration, lossrate) self.wait_rfc2544_throughput() root = ET.parse( os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() else: self._logger.error( 'Maximum number of verify attempts reached. Reporting last result') #restore original values settings.setValue('TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE', orig_min) settings.setValue('TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE', orig_max) settings.setValue('TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE', orig_init) return Xena._create_throughput_result(root) def start_rfc2544_throughput(self, traffic=None, tests=1, duration=20, lossrate=0.0): """Non-blocking version of 'send_rfc2544_throughput'. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._setup_json_config(tests, lossrate, '2544_throughput') self._start_xena_2544() def wait_rfc2544_throughput(self): """Wait for and return results of RFC2544 test. See ITrafficGenerator for description """ self._wait_xena_2544_complete() root = ET.parse(os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() return Xena._create_throughput_result(root) def send_rfc2544_back2back(self, traffic=None, tests=1, duration=20, lossrate=0.0): """Send traffic per RFC2544 back2back test specifications. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._setup_json_config(tests, lossrate, '2544_b2b') self._start_xena_2544() self._wait_xena_2544_complete() root = ET.parse(os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() return Xena._create_throughput_result(root) def start_rfc2544_back2back(self, traffic=None, tests=1, duration=20, lossrate=0.0): """Non-blocking version of 'send_rfc2544_back2back'. See ITrafficGenerator for description """ self._duration = duration self._params.clear() self._params['traffic'] = self.traffic_defaults.copy() if traffic: self._params['traffic'] = merge_spec(self._params['traffic'], traffic) self._setup_json_config(tests, lossrate, '2544_b2b') self._start_xena_2544() def wait_rfc2544_back2back(self): """Wait and set results of RFC2544 test. """ self._wait_xena_2544_complete() root = ET.parse(os.path.join(_CURR_DIR, "xena2544-report.xml")).getroot() return Xena._create_throughput_result(root) if __name__ == "__main__": pass